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■LOW SUPPLY CURRENT: 0.53mA/AMPLI-
FIER
■CLASS AB OUTPUT STAGE: NO CROSS
OVER D ISTORTI ON
■PIN COMPAT IBLE WITH LM124
■LOW INPUT OFFSET VO LTAGE: 1mV
■LOW INPUT OFFSET CURRENT: 2nA
■LOW INPUT BIAS CURRENT: 30nA
■GAIN BANDWIDTH PRODUCT: 1.3MHz
■HIGH DEG REE OF ISOLATION BETWEEN
AMPLIFIERS: 120dB
■OVERL O AD PROT EC TION FOR INPUTS
AND OUTPUTS
DESCRIPTION
The LM148 consists of four independent, high
gain internally compensated, low power opera-
tional amplifiers which have been designed to pro-
vide functional charac teristics identical to tho se of
the familiar UA741 operational amplifier. In addi-
tion the total supply current for all four amplifiers is
compatible to the supply current of a si ngle UA741
type op amp. Other features include input offset
current and input bias current which are much less
than those of a standard UA741. Also, excellent
isolation between amplifiers has been achieved by
independently biasing each amplifier and using
layout techniques qhich minimize thermal cou-
pling.
The LM148 can be used anywhere multiple
UA741 type amplifiers are being used and in appli-
cations where amplifier matching or high packaing
density is required.
ORDER CODE
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTION S (top view)
Part
Number Temperature
Range Package
ND
LM148 -55°C, +125°C ••
LM248 -40°C, +105°C ••
LM348 0°C, +70°C ••
Example : LM348D
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
Inverting Input 2
Non-inverting Input 2
Non-inverting Input 1
CC
V
-
CC
V
1
2
3
4
8
5
6
7
9
10
11
12
13
14
+
Output 3
Output 4
Non-inverting Input 4
Inverting Input 4
Non-inverting Input 3
Inverting Input 3
-
+
-
+
-
+
-
+
Output 1
Inverting Input 1
Output 2
LM148
LM248
LM348
FOUR UA741
QUAD BIPOLAR OPE RA TIONAL AMPLIFIERS
March 2002
LM148-LM248-LM348
2/5
SCHEMATIC DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter LM148 LM248 LM348 Unit
VCC Supply voltage ±22 V
ViInput Voltage 1)
1. For supply voltage less than m axim um value, the absolute maximum input voltage is equal to the supply voltage.
±22 V
Vid Differential Input Voltage ±44 V
Output Short-circuit Duration 2)
2. Any of the amplifier outputs can be shorted to ground indefinitly; however more than one should not be simultaneously shorted as the maximum
junction will be exc eeded.
Infinite
Ptot Power Dissipation 500 mW
Toper Operating Free-air Temperature Range -55 to +125 -40 to +105 0 to +70 °C
Tstg Storage Temperature Range -65 to +150 °C
Non-inverting input
Inverting
input
Vcc+
350kW
2.5kW
Vcc+
36kW
340W
60W
60kW
Vcc-
25W
7.4pF
Vcc+
Output
LM148-LM248-LM348
3/5
ELECTRICAL CHARACTERISTICS
VCC = ±15V, Tamb = 25°C (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
Vio
Input Offset Voltage (Rs ≤ 10kΩ)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
15
6
mV
Iio
Input Offset Current
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax 225
75 nA
Iib
Input Bias Current
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
30 100
300 nA
Avd
Large Signal Voltage Gain (Vo = ±10V, RL = 2kΩ)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
50
25 160 V/mV
SVR Supply Voltage Rejection Ratio (Rs ≤ 10kΩ)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
77
77 100 dB
Icc
Supply Current, all Amp, no load
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax 2.1 3.6
4.8 mA
Vicm
Input Common Mode Voltage Range
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax ±12
±12
CMR Common Mode Rejection Ratio (Rs ≤ 10kΩ)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
70
70 110 dB
Ios Output Short-circuit Current
Tamb = 25°C 10 25 35 mA
±Vopp
Output Voltage Swing
Tamb = 25°C RL ≤ 10kΩ
RL ≤ 2kΩ
Tmin ≤ Tamb ≤ Tmax RL ≤ 10kΩ
RL ≤ 2kΩ
12
10
12
10
13
12 V
SR Slew Rate (VI = ±10V, RL = 10kΩ, CL = 100pF, unity Gain) 0.25 0.5 V/µs
trRsie Time (VI = ±10V, RL = 10kΩ, CL = 100pF, unity Gain) 0.3 µs
KOV Overshoot (VI = ±10V, RL = 10kΩ, CL = 100pF, unity Gain) 5%
R
I
Input Resistance 0.8 2.5 MΩ
GBP Gain Bandwith Product (VI = 10 mV, RL = 10kΩ, CL = 100pF
f =100kHz) 0.7 1.3 MHz
THD Total Harmonic Distortion (f = 1kHz, Av = 20dB, RL = 10kΩ
CL = 100pF, Vo = 2Vpp) 0.08 %
enEquivalent Input Noise Voltage (f = 1kHz, Rs = 100Ω40
Vo1/Vo2 Channel Separation 120 dB
nV
Hz
------------
LM148-LM248-LM348
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PACKAGE MECHANICAL DATA
14 PINS - PLASTIC PACKAGE
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
a1 0.51 0.020
B 1.39 1.65 0.055 0.065
b 0.5 0.020
b1 0.25 0.010
D 20 0.787
E 8.5 0.335
e 2.54 0.100
e3 15.24 0.600
F 7.1 0.280
i 5.1 0.201
L 3.3 0.130
Z 1.27 2.54 0.050 0.100
LM148-LM248-LM348
5/5
PACKAGE MECHANICAL DATA
14 PINS - PLASTIC MICROPACKAGE (SO)
Dimensions Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 1.75 0.069
a1 0.1 0.2 0.004 0.008
a2 1.6 0.063
b 0.35 0.46 0.014 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.020
c1 45° (typ.)
D (1) 8.55 8.75 0.336 0.344
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 7.62 0.300
F (1) 3.8 4.0 0.150 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.020 0.050
M 0.68 0.027
S 8° (max.)
Note : (1) D and F do not include mold flash or protrusions - Mold flash or protrusions shall not exceed 0.15mm (.066 inc) ONLY FOR DATA B OOK.
DM
F
14
17
8
be3 eE
LG
C
c1
A
a2
a1
b1
s
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